基于5G的泛在电力物联网

在大规模分布式发电和储能的接入下,能源行业结构不断调整。能源互联网和泛在电力物联网的概念相继被提出,要实现电力系统数据的泛在连接,电网建设进入新阶段。5G技术飞速发展,有着带宽更大、传输速率更高、时延更低的特点,与泛在电力物联网网络层的建设紧密结合。介绍了泛在电力物联网的概念,结合5G技术的关键技术和特点,探讨5G在泛在电力物联网中的应用场景。最后指出了基于5G的泛在电力物联网面临的安全性挑战和未来发展方向。

Power quality enhancement and engineering application with high permeability distributed photovoltaic access to low-voltage distribution networks in Australia

Considering power quality problems such as overvoltage and three-phase unbalance caused by high permeability distributed photovoltaic access in low-voltage distribution networks, this paper proposes a comprehensive control scheme using a static var. generator (SVG), electric energy storage (EES), a phase switching device (PSD) and an intelligent terminal controller. The control strategies of transformer overload, bus over/under voltage, anticountercurrent, storage battery state of charge (SOC) maintenance, and three-phase unbalance are studied. The engineering application in the Greenvale low-voltage distribution networks in Australia with high permeability distributed photovoltaics is discussed. The results show that the intelligent terminal controller is able to improve the power quality of low-voltage distribution networks through coordination with EES, SVG and PSD.